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Chen X, Yu H, Li Z, Ye W, Liu Z, Gao J, Wang Y, Li X, Zhang L, Alenina N, Bader M, Ding H, Li P, Aung LHH. Oxidative RNA Damage in the Pathogenesis and Treatment of Type 2 Diabetes. Front Physiol 2022; 13:725919. [PMID: 35418873 PMCID: PMC8995861 DOI: 10.3389/fphys.2022.725919] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 03/11/2022] [Indexed: 12/17/2022] Open
Abstract
Excessive production of free radicals can induce cellular damage, which is associated with many diseases. RNA is more susceptible to oxidative damage than DNA due to its single-stranded structure, and lack of protective proteins. Yet, oxidative damage to RNAs received little attention. Accumulating evidence reveals that oxidized RNAs may be dysfunctional and play fundamental role in the occurrence and development of type 2 diabetes (T2D) and its complications. Oxidized guanine nucleoside, 8-oxo-7, 8-dihydroguanine (8-oxoGuo) is a biomarker of RNA oxidation that could be associated with prognosis in patients with T2D. Nowadays, some clinical trials used antioxidants for the treatment of T2D, though the pharmacological effects remained unclear. In this review, we overview the cellular handling mechanisms and the consequences of the oxidative RNA damage for the better understanding of pathogenesis of T2D and may provide new insights to better therapeutic strategy.
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Affiliation(s)
- Xiatian Chen
- Center for Molecular Genetics, Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, China
- School of Basic Medicine, Qingdao University, Qingdao, China
| | - Hua Yu
- The Affiliated Cardiovascular Hospital of Qingdao University, Qingdao, China
| | - Zhe Li
- Center for Molecular Genetics, Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, China
- School of Basic Medicine, Qingdao University, Qingdao, China
| | - Wei Ye
- Jiangsu Provincial Engineering Research Center for Biomedical Materials and Advanced Medical Device, Huaiyin Institute of Technology, Huaian, China
| | - Ziqian Liu
- Center for Molecular Genetics, Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, China
- School of Basic Medicine, Qingdao University, Qingdao, China
| | - Jinning Gao
- Center for Molecular Genetics, Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, China
| | - Yin Wang
- Center for Molecular Genetics, Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, China
| | - Xin Li
- Center for Molecular Genetics, Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, China
| | - Lei Zhang
- Center for Molecular Genetics, Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, China
| | - Natalia Alenina
- Max-Delbrück-Center for Molecular Medicine (MDC), Berlin, Germany
| | - Michael Bader
- Max-Delbrück-Center for Molecular Medicine (MDC), Berlin, Germany
| | - Hongyan Ding
- School of Bioengineering, Suqian University, Suqian, China
| | - Peifeng Li
- Center for Molecular Genetics, Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, China
- *Correspondence: Peifeng Li, ; Lynn Htet Htet Aung,
| | - Lynn Htet Htet Aung
- Center for Molecular Genetics, Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, China
- *Correspondence: Peifeng Li, ; Lynn Htet Htet Aung,
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Henriksen T, Weimann A, Larsen EL, Poulsen HE. Quantification of 8-oxo-7,8-dihydro-2'-deoxyguanosine and 8-oxo-7,8-dihydro-guanosine concentrations in urine and plasma for estimating 24-h urinary output. Free Radic Biol Med 2021; 172:350-357. [PMID: 34166769 DOI: 10.1016/j.freeradbiomed.2021.06.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 06/15/2021] [Indexed: 02/07/2023]
Abstract
Among markers for oxidative stress urinary excretion 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodGuo) and 8-oxo-7,8-dihydro-guanosine (8-oxoGuo) have been widely used in controlled and epidemiological studies, and are considered to represent intracellular markers of oxidation of DNA and RNA in the entire organism, respectively. Although being non-invasive, urinary methods have shortcomings. There is no established method for analysis of 8-oxodGuo and 8-oxoGuo in plasma and the few plasma values presented in the literature vary greatly. We here present a liquid chromatography mass spectrometry method with full validation for analysis of 8-oxodGuo and 8-oxoGuo in plasma. Further, we investigated the basis for our previously physiological model and show that a single plasma sample can be used to estimate the 24-h production of 8-oxoGuo, whereas we challenge the use of urinary 8-oxodGuo/creatinine ratio or plasma 8-oxodGuo as measures of oxidative stress.
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Affiliation(s)
- Trine Henriksen
- Department of Clinical Pharmacology, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Copenhagen, Denmark
| | - Allan Weimann
- Department of Clinical Pharmacology, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Copenhagen, Denmark; Department of Clinical Biochemistry, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Copenhagen, Denmark
| | - Emil List Larsen
- Department of Clinical Pharmacology, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Copenhagen, Denmark; Department of Cardiology, Copenhagen University Hospital, North Zealand, Hillerød, Denmark
| | - Henrik Enghusen Poulsen
- Department of Clinical Pharmacology, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Copenhagen, Denmark; Department of Cardiology, Copenhagen University Hospital, North Zealand, Hillerød, Denmark; Department of Clinical Medicine, Health Science Faculty, University of Copenhagen, Denmark; Department of Endochrinology, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Copenhagen, Denmark.
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3
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Chao MR, Evans MD, Hu CW, Ji Y, Møller P, Rossner P, Cooke MS. Biomarkers of nucleic acid oxidation - A summary state-of-the-art. Redox Biol 2021; 42:101872. [PMID: 33579665 PMCID: PMC8113048 DOI: 10.1016/j.redox.2021.101872] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/12/2021] [Accepted: 01/15/2021] [Indexed: 12/12/2022] Open
Abstract
Oxidatively generated damage to DNA has been implicated in the pathogenesis of a wide variety of diseases. Increasingly, interest is also focusing upon the effects of damage to the other nucleic acids, RNA and the (2′-deoxy-)ribonucleotide pools, and evidence is growing that these too may have an important role in disease. LC-MS/MS has the ability to provide absolute quantification of specific biomarkers, such as 8-oxo-7,8-dihydro-2′-deoxyGuo (8-oxodG), in both nuclear and mitochondrial DNA, and 8-oxoGuo in RNA. However, significant quantities of tissue are needed, limiting its use in human biomonitoring studies. In contrast, the comet assay requires much less material, and as little as 5 μL of blood may be used, offering a minimally invasive means of assessing oxidative stress in vivo, but this is restricted to nuclear DNA damage only. Urine is an ideal matrix in which to non-invasively study nucleic acid-derived biomarkers of oxidative stress, and considerable progress has been made towards robustly validating these measurements, not least through the efforts of the European Standards Committee on Urinary (DNA) Lesion Analysis. For urine, LC-MS/MS is considered the gold standard approach, and although there have been improvements to the ELISA methodology, this is largely limited to 8-oxodG. Emerging DNA adductomics approaches, which either comprehensively assess the totality of adducts in DNA, or map DNA damage across the nuclear and mitochondrial genomes, offer the potential to considerably advance our understanding of the mechanistic role of oxidatively damaged nucleic acids in disease. Oxidatively damaged nucleic acids are implicated in the pathogenesis of disease. LC-MS/MS, comet assay and ELISA are often used to study oxidatively damaged DNA. Urinary oxidatively damaged nucleic acids non-invasively reflect oxidative stress. DNA adductomics will aid understanding the role of ROS damaged DNA in disease.
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Affiliation(s)
- Mu-Rong Chao
- Department of Occupational Safety and Health, Chung Shan Medical University, Taichung, 402, Taiwan; Department of Occupational Medicine, Chung Shan Medical University Hospital, Taichung, 402, Taiwan
| | - Mark D Evans
- Leicester School of Allied Health Sciences, Faculty of Health & Life Sciences, De Montfort University, The Gateway, Leicester, LE1 9BH, United Kingdom
| | - Chiung-Wen Hu
- Department of Public Health, Chung Shan Medical University, Taichung, 402, Taiwan
| | - Yunhee Ji
- Department of Environmental Health Sciences, Florida International University, Miami, FL, 33199, USA
| | - Peter Møller
- Section of Environmental Health, Department of Public Health, University of Copenhagen, Øster Farimagsgade 5A, DK, 1014, Copenhagen K, Denmark
| | - Pavel Rossner
- Department of Nanotoxicology and Molecular Epidemiology, Institute of Experimental Medicine of the CAS, 142 20, Prague, Czech Republic
| | - Marcus S Cooke
- Oxidative Stress Group, Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, Tampa, FL, 33620, USA.
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Carlsson ER, Fenger M, Henriksen T, Kjaer LK, Worm D, Hansen DL, Madsbad S, Poulsen HE. Reduction of oxidative stress on DNA and RNA in obese patients after Roux-en-Y gastric bypass surgery-An observational cohort study of changes in urinary markers. PLoS One 2020; 15:e0243918. [PMID: 33315915 PMCID: PMC7735613 DOI: 10.1371/journal.pone.0243918] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 11/18/2020] [Indexed: 01/14/2023] Open
Abstract
Increased oxidative stress in obesity and diabetes is associated with morbidity and mortality risks. Levels of oxidative damage to DNA and RNA can be estimated through measurement of 8-oxo-7,8-dihydro-2´-deoxyguanosine (8-oxodG) and 8-oxo-7,8-dihydroguanosine (8-oxoGuo) in urine. Both markers have been associated with type 2 diabetes, where especially 8-oxoGuo is prognostic for mortality risk. We hypothesized that Roux-en-Y gastric bypass (RYGB) surgery that has considerable effects on bodyweight, hyperglycemia and mortality, might be working through mechanisms that reduce oxidative stress, thereby reducing levels of the urinary markers. We used liquid chromatography coupled with tandem mass spectrometry to analyze the content of 8-oxodG and 8-oxoGuo in urinary samples from 356 obese patients treated with the RYGB-procedure. Mean age (SD) was 44.2 (9.6) years, BMI was 42.1 (5.6) kg/m2. Ninety-six (27%) of the patients had type 2 diabetes. Excretion levels of each marker before and after surgery were compared as estimates of the total 24-hour excretion, using a model based on glomerular filtration rate (calculated from cystatin C, age, height and weight), plasma- and urinary creatinine. The excretion of 8-oxodG increased in the first months after RYGB. For 8-oxoGuo, a gradual decrease was seen. Two years after RYGB and a mean weight loss of 35 kg, decreased hyperglycemia and insulin resistance, excretion levels of both markers were reduced by approximately 12% (P < 0.001). For both markers, mean excretion levels were about 30% lower in the female subgroup (P < 0.0001). Also, in this subgroup, excretion of 8-oxodG was significantly lower in patients with than without diabetes. We conclude, that oxidative damage to nucleic acids, reflected in the excretion of 8-oxodG and 8-oxoGuo, had decreased significantly two years after RYGB-indicating that reduced oxidative stress could be contributing to the many long-term benefits of RYGB-surgery in obesity and type 2 diabetes.
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Affiliation(s)
- Elin Rebecka Carlsson
- Department of Clinical Biochemistry, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark
- Department of Clinical Biochemistry, Nordsjaellands Hospital, University of Copenhagen, Hilleroed, Denmark
| | - Mogens Fenger
- Department of Clinical Biochemistry, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark
| | - Trine Henriksen
- Department of Clinical Pharmacology, Bispebjerg Frederiksberg Hospital, Copenhagen University Hospital, Copenhagen, Denmark
| | - Laura Kofoed Kjaer
- Department of Clinical Pharmacology, Bispebjerg Frederiksberg Hospital, Copenhagen University Hospital, Copenhagen, Denmark
| | - Dorte Worm
- Department of Medicine, Amager hospital, Copenhagen, Denmark
| | | | - Sten Madsbad
- Department of Endocrinology, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark
| | - Henrik Enghusen Poulsen
- Department of Clinical Pharmacology, Bispebjerg Frederiksberg Hospital, Copenhagen University Hospital, Copenhagen, Denmark
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Zhang R, Yu S, Wang D, Yin Y, Yu J, Cao Y, Qiu L. Short-term biological variation and Reference change values of urinary 8-oxo-7,8-dihydro-2'-deoxyguanosine and 8-oxo-7,8-dihydroguanosine. J Clin Lab Anal 2020; 34:e23522. [PMID: 32827234 PMCID: PMC7755802 DOI: 10.1002/jcla.23522] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 07/16/2020] [Accepted: 07/20/2020] [Indexed: 01/25/2023] Open
Abstract
AIM The DNA and RNA oxidative damage products urinary 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-odGsn) and 8-oxo-7,8-dihydroguanosine (8-oGsn) have potential use in clinical practice. However, biological variation (BV) and reference change values (RCVs) have not been established. The aim of this study was to establish the short-term between-subject BV(CVG ), within-subject BV(CVI ), and RCVs for urinary 8-odGsn and 8-oGsn. METHODS First-morning midstream urine specimens were collected from 20 apparently healthy subjects(ten males and ten females) on five consecutive days. 8-odGsn and 8-oGsn were measured using LC-MS/MS, while urine creatinine (U-Cr) was also measured to correct their results. A two-level nested ANOVA was used to estimate the CVI and CVG. RESULTS: The values of CVG for 8-odGsn, 8-odGsn/U-Cr, 8-oGsn, and 8-oGsn/U-Cr were 31.2%, 39.6%, 35.3%, and 28.8%, respectively, while CVI for them were 40.5%, 9.0%, 33.5%, and 12.1%, respectively. The RCVs for 8-odGsn, 8-odGsn/U-Cr, 8-oGsn, and 8-oGsn/U-Cr were 112.5%, 26.7%, 93.7%, and 36.5%, respectively. CONCLUSION BV and RCVs were firstly established for 8-oxo-dGsn and 8-oGsn, and can be used in clinical practice.
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Affiliation(s)
- Ruiping Zhang
- Department of Clinical Laboratory, China-Japan Friendship Hospital, Beijing, China
| | - Songlin Yu
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Danchen Wang
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Yicong Yin
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Jialei Yu
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
| | - Yongtong Cao
- Department of Clinical Laboratory, China-Japan Friendship Hospital, Beijing, China
| | - Ling Qiu
- Department of Clinical Laboratory, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Sciences, Beijing, China
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Xuan Y, Gào X, Anusruti A, Holleczek B, Jansen EHJM, Muhlack DC, Brenner H, Schöttker B. Association of Serum Markers of Oxidative Stress With Incident Major Cardiovascular Events, Cancer Incidence, and All-Cause Mortality in Type 2 Diabetes Patients: Pooled Results From Two Cohort Studies. Diabetes Care 2019; 42:1436-1445. [PMID: 31167893 DOI: 10.2337/dc19-0292] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 05/10/2019] [Indexed: 02/03/2023]
Abstract
OBJECTIVE Oxidative stress plays an important role in the pathophysiology of type 2 diabetes mellitus (T2DM). However, associations of biomarkers of oxidative stress with diabetes complications have not yet been addressed in large cohort studies. RESEARCH DESIGN AND METHODS Derivatives of reactive oxygen metabolites (d-ROMs) levels, a proxy for the reactive oxygen species burden, and total thiol levels (TTLs), a proxy for the reductive capacity, were measured in 2,125 patients with T2DM from two German cohort studies of almost equal size at baseline and 3-4 years later. Multivariable adjusted Cox proportional hazards models with time-dependent modeled d-ROMs levels and TTLs were used to assess the associations with incident major cardiovascular events (MCE), cancer incidence, and all-cause mortality. RESULTS In total, 205, 179, and 394 MCE, cancer, and all-cause mortality cases were observed during 6-7 years of follow-up, respectively. Both oxidative stress biomarkers and the d-ROMs-to-TTL ratio were statistically significantly associated with all-cause mortality in both cohorts, and the pooled hazard ratios (HRs) and 95% CIs for top versus bottom tertiles were 2.10 (95% CI 1.43, 3.09) for d-ROMs levels, 0.59 (0.40, 0.87) for TTLs, and 2.50 (1.86, 3.36) for d-ROMs-to-TTL ratio. The d-ROMs-to-TTL ratio was also statistically significantly associated with incident MCE for top versus bottom tertile (1.65 [1.07, 2.54]), but this association did not persist after additional adjustment for chronic diseases. No associations with cancer were detected. CONCLUSIONS The observed strong associations of both biomarkers with mortality suggest an important contribution of an imbalanced redox system to the premature mortality of patients with diabetes.
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Affiliation(s)
- Yang Xuan
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center, Heidelberg, Germany.,Network Aging Research, University of Heidelberg, Heidelberg, Germany
| | - Xin Gào
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center, Heidelberg, Germany.,Network Aging Research, University of Heidelberg, Heidelberg, Germany
| | - Ankita Anusruti
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center, Heidelberg, Germany.,Network Aging Research, University of Heidelberg, Heidelberg, Germany
| | | | - Eugène H J M Jansen
- Centre for Health Protection, National Institute for Public Health and the Environment, Bilthoven, the Netherlands
| | - Dana Clarissa Muhlack
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center, Heidelberg, Germany.,Network Aging Research, University of Heidelberg, Heidelberg, Germany
| | - Hermann Brenner
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center, Heidelberg, Germany.,Network Aging Research, University of Heidelberg, Heidelberg, Germany
| | - Ben Schöttker
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center, Heidelberg, Germany .,Network Aging Research, University of Heidelberg, Heidelberg, Germany
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Mitochondrial Activity and Skeletal Muscle Insulin Resistance in Kidney Disease. Int J Mol Sci 2019; 20:ijms20112751. [PMID: 31195596 PMCID: PMC6600571 DOI: 10.3390/ijms20112751] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 05/28/2019] [Accepted: 06/04/2019] [Indexed: 12/17/2022] Open
Abstract
Insulin resistance is a key feature of the metabolic syndrome, a cluster of medical disorders that together increase the chance of developing type 2 diabetes and cardiovascular disease. In turn, type 2 diabetes may cause complications such as diabetic kidney disease (DKD). Obesity is a major risk factor for developing systemic insulin resistance, and skeletal muscle is the first tissue in susceptible individuals to lose its insulin responsiveness. Interestingly, lean individuals are not immune to insulin resistance either. Non-obese, non-diabetic subjects with chronic kidney disease (CKD), for example, exhibit insulin resistance at the very onset of CKD, even before clinical symptoms of renal failure are clear. This uraemic insulin resistance contributes to the muscle weakness and muscle wasting that many CKD patients face, especially during the later stages of the disease. Bioenergetic failure has been associated with the loss of skeletal muscle insulin sensitivity in obesity and uraemia, as well as in the development of kidney disease and its sarcopenic complications. In this mini review, we evaluate how mitochondrial activity of different renal cell types changes during DKD progression, and discuss the controversial role of oxidative stress and mitochondrial reactive oxygen species in DKD. We also compare the involvement of skeletal muscle mitochondria in uraemic and obesity-related muscle insulin resistance.
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Kofoed Kjær L, Cejvanovic V, Henriksen T, Hansen T, Pedersen O, Kjeldahl Christensen C, Torp-Pedersen C, Alexander Gerds T, Brandslund I, Mandrup-Poulsen T, Enghusen Poulsen H. Urinary nucleic acid oxidation product levels show differential associations with pharmacological treatment in patients with type 2 diabetes. Free Radic Res 2019; 53:694-703. [PMID: 31161826 DOI: 10.1080/10715762.2019.1622011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The relationship between RNA and DNA oxidation and pharmacological treatment has not been systematically investigated in patients with type 2 diabetes (T2D). We aimed to investigate the association between pharmacological treatments and levels of urinary markers of nucleic acid oxidation in T2D patients. Vejle Diabetes Biobank cohort data was nested into nationwide registry data. Multiple logistic regression was used to associate drug usage with risk of high (above median) RNA and DNA oxidation. Data from 2664 T2D patients (64% male, age range: 25-75) were included. Questionnaire-validated lipid lowering drug use was associated with low RNA oxidation (Odds ratio, OR 0.71, 95% CI: [0.59-0.87]). Insulin and non-specific antidiabetic drugs were associated with low DNA oxidation (insulin: OR 0.60, 95% CI [0.49-0.73]). Oral antidiabetics were associated with high DNA oxidation and RNA oxidation (OR 1.30, 95% CI [1.10-1.53] and OR 1.26, 95% CI [1.07-1.29]). Our findings indicate that diabetes-related drugs are associated with RNA and DNA oxidation and further studies are required to determine causality in T2D patients.
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Affiliation(s)
- Laura Kofoed Kjær
- a Department of Clinical Pharmacology , Bispebjerg and Frederiksberg Hospital , Copenhagen , Denmark.,b Faculty of Health and Medical Sciences , University of Copenhagen , Copenhagen , Denmark
| | - Vanja Cejvanovic
- a Department of Clinical Pharmacology , Bispebjerg and Frederiksberg Hospital , Copenhagen , Denmark.,b Faculty of Health and Medical Sciences , University of Copenhagen , Copenhagen , Denmark
| | - Trine Henriksen
- a Department of Clinical Pharmacology , Bispebjerg and Frederiksberg Hospital , Copenhagen , Denmark
| | - Torben Hansen
- c Novo Nordisk Foundation Center for Basic Metabolic Research, Section of Metabolic Genetics, Faculty of Health and Medical Sciences , University of Copenhagen , Copenhagen , Denmark
| | - Oluf Pedersen
- c Novo Nordisk Foundation Center for Basic Metabolic Research, Section of Metabolic Genetics, Faculty of Health and Medical Sciences , University of Copenhagen , Copenhagen , Denmark
| | | | - Christian Torp-Pedersen
- e Department of Health, Science and Technology , Aalborg University , Aalborg , Denmark.,f Department of Cardiology and Epidemiology /Biostatistics, Aalborg University Hospital , Aalborg , Denmark
| | | | - Ivan Brandslund
- h Department of Clinical Immunology and Biochemistry , Lillebaelt Hospital , Vejle , Denmark.,i Faculty of Health Sciences, Institute of Regional Health Research , University of Southern Denmark , Odense , Denmark
| | - Thomas Mandrup-Poulsen
- j Department of Biomedical Sciences, Faculty of Health and Medical Sciences , University of Copenhagen , Copenhagen , Denmark
| | - Henrik Enghusen Poulsen
- a Department of Clinical Pharmacology , Bispebjerg and Frederiksberg Hospital , Copenhagen , Denmark.,b Faculty of Health and Medical Sciences , University of Copenhagen , Copenhagen , Denmark
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9
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Kjaer LK, Grand MK, Siersma V, Broedbaek K, Jorgensen A, de Fine Olivarius N, Poulsen HE. The effect of structured personal care on RNA oxidation: A 19-year follow-up of the randomized trial Diabetes Care in General Practice (DCGP). J Diabetes Complications 2019; 33:202-207. [PMID: 30638771 DOI: 10.1016/j.jdiacomp.2018.12.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 12/05/2018] [Accepted: 12/05/2018] [Indexed: 12/12/2022]
Abstract
AIMS The urinary marker of RNA oxidation, 8‑oxo‑7,8‑dihydroguanosine (8-oxoGuo), but not the corresponding marker of DNA oxidation, 8‑oxo‑7,8‑dihydro‑2'‑deoxyguanosine (8-oxodG), is a prognostic biomarker in patients with type 2 diabetes (T2D). The aim of the present study was to investigate the effect of structured personal care (individualized multifactorial treatment) versus standard care on RNA oxidation level in patients with T2D and to assess if the effect of structured personal care on all-cause and diabetes-related mortality was modified by RNA oxidation level. METHODS Urine samples were analyzed for 8-oxoGuo/8-oxodG from 1381 newly diagnosed T2D patients from the cluster randomized trial Diabetes Care in General Practice cohort, and 970 patients were reexamined after six years of intervention. RESULTS The yearly variation in RNA oxidation levels were not significantly different between the structured personal care group and standard care group. The effect of treatment on all-cause and diabetes-related mortality was not modified by the level of RNA oxidation. No changes in DNA oxidation were seen. CONCLUSIONS Structured personal care does not influence RNA oxidation level nor is it better for patients with high RNA oxidation level. Thus, structured personal care may not impact the disease-related aspects identified by RNA oxidation level in T2D patients.
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Affiliation(s)
- Laura Kofoed Kjaer
- Department of Clinical Pharmacology, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark; Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
| | - Mia Klinten Grand
- The Research Unit for General Practice and Section of General Practice, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Volkert Siersma
- The Research Unit for General Practice and Section of General Practice, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Kasper Broedbaek
- Department of Clinical Pharmacology, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark
| | - Anders Jorgensen
- Psychiatric Center Copenhagen (Rigshospitalet), Mental Health Services of the Capital Region of Denmark, Denmark
| | - Niels de Fine Olivarius
- The Research Unit for General Practice and Section of General Practice, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Henrik Enghusen Poulsen
- Department of Clinical Pharmacology, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark; Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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